<template>
  <div>
    <!-- 面包屑导航区域 -->
    <el-breadcrumb separator-class="el-icon-arrow-right">
      <el-breadcrumb-item :to="{ path: '/home' }">首页</el-breadcrumb-item>
      <el-breadcrumb-item>用户管理</el-breadcrumb-item>
      <el-breadcrumb-item>用户列表</el-breadcrumb-item>
    </el-breadcrumb>

    <!-- 卡片视图 -->
    <el-card>
      <!-- 搜索与添加 -->
      <el-row :gutter="20">
        <el-col :span="10">
          <el-input placeholder="请输入内容" v-model="queryInfo.query" clearable @clear="getUserList" @keyup.enter.native="getUserList">
            <el-button slot="append" icon="el-icon-search" @click="getUserList"></el-button>
          </el-input>
        </el-col>
        <el-col :span="4">
          <el-button type="primary" @click="addDialogVisible = true">添加用户</el-button>
        </el-col>
      </el-row>

      <!-- 用户列表区域 -->
      <el-table :data="userlist" border stripe>
        <el-table-column type="index" label="#"></el-table-column>
        <el-table-column label="姓名" prop="username"></el-table-column>
        <el-table-column label="邮箱" prop="email"></el-table-column>
        <el-table-column label="电话" prop="mobile"></el-table-column>
        <el-table-column label="角色" prop="role_name"></el-table-column>
        <el-table-column label="状态">
          <template v-slot="scope">
            <el-switch v-model="scope.row.mg_state" @change="userStateChanged(scope.row)"></el-switch>
          </template>
        </el-table-column>
        <el-table-column label="操作" width="180px">
          <template v-slot="scope">
            <el-button type="primary" icon="el-icon-edit" size="mini" @click="showEditDialog(scope.row.id)"></el-button>
            <el-button type="danger" icon="el-icon-delete" size="mini" @click="removeUserById(scope.row.id)"></el-button>
            <!-- 分配角色按钮 -->
            <el-tooltip effect="dark" content="分配角色" placement="top-start" :enterable="false">
              <el-button type="warning" icon="el-icon-setting" size="mini" @click="setRole(scope.row)"></el-button>
            </el-tooltip>
          </template>
        </el-table-column>
      </el-table>

      <!-- 分页区域 -->
      <div class="block">
        <el-pagination @size-change="handleSizeChange" @current-change="handleCurrentChange" :current-page="queryInfo.pagenum" :page-sizes="[1, 2, 5, 10]" :page-size="queryInfo.pagesize" layout="total, sizes, prev, pager, next, jumper" :total="total"> </el-pagination>
      </div>

      <!-- 添加用户对话框 -->
      <el-dialog title="添加用户" :visible.sync="addDialogVisible" width="50%" @close="addDialogClose">
        <!-- 内容主体区域 -->
        <el-form :model="addForm" :rules="addFormRules" ref="addFormRef" label-width="70px">
          <el-form-item label="用户名" prop="username">
            <el-input v-model="addForm.username"></el-input>
          </el-form-item>
          <el-form-item label="密码" prop="password">
            <el-input v-model="addForm.password"></el-input>
          </el-form-item>
          <el-form-item label="邮箱" prop="email">
            <el-input v-model="addForm.email"></el-input>
          </el-form-item>
          <el-form-item label="手机" prop="mobile">
            <el-input v-model="addForm.mobile"></el-input>
          </el-form-item>
        </el-form>
        <!-- 底部 -->
        <span slot="footer" class="dialog-footer">
          <el-button @click="addDialogVisible = false">取 消</el-button>
          <el-button type="primary" @click="addUser">确 定</el-button>
        </span>
      </el-dialog>

      <!-- 修改用户信息的对话框 -->
      <el-dialog title="修改用户信息" :visible.sync="editDialogVisible" width="50%" @close="editDialogClose">
        <el-form ref="editFormRef" :model="editForm" :rules="editFormRules" label-width="70px">
          <el-form-item label="用户名">
            <el-input v-model="editForm.username" disabled></el-input>
          </el-form-item>
          <el-form-item label="邮箱" prop="email">
            <el-input v-model="editForm.email"></el-input>
          </el-form-item>
          <el-form-item label="手机" prop="mobile">
            <el-input v-model="editForm.mobile"></el-input>
          </el-form-item>
        </el-form>
        <span slot="footer" class="dialog-footer">
          <el-button @click="editDialogVisible = false">取 消</el-button>
          <el-button type="primary" @click="editUserInfo">确 定</el-button>
        </span>
      </el-dialog>

      <!-- 分配角色的对话框 -->
      <el-dialog title="分配角色" :visible.sync="setRoleDialogVisible" width="50%" @close="setRoleDialogClosed">
        <div>
          <p>当前的用户：{{ userInfo.username }}</p>
          <p>当前的角色：{{ userInfo.role_name }}</p>
          <p>
            分配新角色:
            <el-select v-model="selectedRoleId" placeholder="请选择">
              <el-option v-for="item in rolesList" :key="item.id" :label="item.roleName" :value="item.id"> </el-option>
            </el-select>
          </p>
        </div>
        <span slot="footer" class="dialog-footer">
          <el-button @click="setRoleDialogVisible = false">取 消</el-button>
          <el-button type="primary" @click="saveRoleInfo">确 定</el-button>
        </span>
      </el-dialog>
    </el-card>
  </div>
</template>

<script>
import $http from '../../utlis/request.js'

export default {
  name: 'user',
  data() {
    // 验证邮箱的规则
    var checkEmail = (rule, value, cb) => {
      // 验证邮箱的正则表达式
      const regEmail = /^\w+([-+.]\w+)*@\w+([-.]\w+)*\.\w+([-.]\w+)*$/

      if (regEmail.test(value)) return cb()
      cb(new Error('请输入合法的邮箱'))
    }
    // 验证手机的规则
    var checkMobile = (rule, value, cb) => {
      // 验证手机号的正则表达式
      const regMobile = /^(13[0-9]|14[5|7]|15[0|1|2|3|4|5|6|7|8|9]|18[0|1|2|3|5|6|7|8|9])\d{8}$/

      if (regMobile.test(value)) return cb()
      cb(new Error('请输入合法的手机号'))
    }
    return {
      // 获取用户列表参数对象
      queryInfo: {
        // 搜索关键字
        query: '',
        // 当前页数
        pagenum: 1,
        // 当前每页显示多少条数据
        pagesize: 2
      },
      userlist: [],
      total: 0,
      // 控制添加用户对话框的显示与隐藏
      addDialogVisible: false,
      // 添加表单的数据对象
      addForm: {
        username: '',
        password: '',
        email: '',
        mobile: ''
      },
      // 表单验证的规则对象
      addFormRules: {
        username: [
          { required: true, message: '请输入用户名', trigger: 'blur' },
          { min: 3, max: 9, message: '用户名的长度在3~9个字符串之间', trigger: 'blur' }
        ],
        password: [
          { required: true, message: '请输入密码', trigger: 'blur' },
          { min: 6, max: 12, message: '密码的长度在6~12个字符串之间', trigger: 'blur' }
        ],
        email: [
          { required: true, message: '请输入邮箱', trigger: 'blur' },
          { validator: checkEmail, trigger: 'blur' }
        ],
        mobile: [
          { required: true, message: '请输入手机号', trigger: 'blur' },
          { validator: checkMobile, trigger: 'blur' }
        ]
      },
      //控制编辑用户信息对话框的显示与隐藏
      editDialogVisible: false,
      //查询到的用户信息对象
      editForm: {},
      //修改用户的表单规则对象
      editFormRules: {
        email: [
          { required: true, message: '请输入邮箱', trigger: 'blur' },
          { validator: checkEmail, trigger: 'blur' }
        ],
        mobile: [
          { required: true, message: '请输入手机号', trigger: 'blur' },
          { validator: checkMobile, trigger: 'blur' }
        ]
      },
      // 控制分配角色对话框的显示与隐藏
      setRoleDialogVisible: false,
      // 需要被分配角色权限的用户
      userInfo: {},
      // 所有角色的数据列表
      rolesList: [],
      // 已选中的角色列表值
      selectedRoleId: ''
    }
  },
  created() {
    this.getUserList()
  },
  methods: {
    // 用户用户信息
    async getUserList() {
      const { data: res } = await $http.get('users', { params: this.queryInfo })

      if (res.meta.status !== 200) return this.$message.error('获取用户列表失败!')
      this.userlist = res.data.users
      this.total = res.data.total
    },
    // 监听pagesize改变事件
    handleSizeChange(newSize) {
      // console.log(newSize)
      this.queryInfo.pagesize = newSize
      this.getUserList()
    },
    // 监听页码值改变发事件
    handleCurrentChange(newPage) {
      this.queryInfo.pagenum = newPage
      this.getUserList()
    },
    //监听switch开关的状态的变化
    async userStateChanged(userInfo) {
      const { data: res } = await $http.put(`users/${userInfo.id}/state/${userInfo.mg_state}`)
      if (res.meta.status !== 200) {
        userInfo.mg_state = !userInfo.mg_state
        return this.$message.error('更新用户状态失败!')
      }
      this.$message.success('更新用户状态成功!')
    },
    // 监听添加用户表单关闭事件
    addDialogClose() {
      this.$refs.addFormRef.resetFields()
    },
    // 点击确定按钮，添加用户
    addUser() {
      this.$refs.addFormRef.validate(async (valid) => {
        if (!valid) return
        //添加用户的请求
        const { data: res } = await $http.post('users', this.addForm)
        if (res.meta.status !== 201) return this.$message.error('添加用户失败!')
        this.$message.success('添加用户成功')
        // 关闭表单
        this.addDialogVisible = false
        // 刷新数据
        this.getUserList()
      })
    },
    // 展示编辑的对话框
    async showEditDialog(id) {
      const { data: res } = await $http.get('users/' + id)
      if (res.meta.status !== 200) return this.$message.error('获取用户信息失败')
      this.editForm = res.data
      this.editDialogVisible = true
    },
    // 监听修改用户对话框的关闭事件
    editDialogClose() {
      this.$refs.editFormRef.resetFields()
    },
    // 修改用户信息并提交
    editUserInfo(id) {
      this.$refs.editFormRef.validate(async (valid) => {
        if (!valid) return
        //发起修改用户信息请求
        const { data: res } = await $http.put('users/' + this.editForm.id, {
          email: this.editForm.email,
          mobile: this.editForm.mobile
        })
        if (res.meta.status !== 200) return this.$message.error('更新用户信息失败')
        //关闭对话框
        this.editDialogVisible = false
        //刷新列表数据
        this.getUserList()
        //提示更新成功
        this.$message.success('更新用户信息成功')
      })
    },
    // 根据id删除用户信息
    async removeUserById(id) {
      const confirmResult = await this.$confirm('此操作将永久删除该用户, 是否继续?', '提示', {
        confirmButtonText: '确定',
        cancelButtonText: '取消',
        type: 'warning'
      }).catch((err) => err)

      // 如果用户取消的删除返回字符串为cancel
      // 如果用户确定了删除返回字符串为confirm
      if (confirmResult !== 'confirm') return this.$message.info('已取消删除')

      const { data: res } = await $http.delete('users/' + id)

      if (res.meta.status !== 200) return this.$message.error('删除用户失败')
      // 刷新用户列表
      this.getUserList()
      // 提示删除成功
      this.$message.success('删除用户成功')
    },
    // 展示分配角色的对话框
    async setRole(userInfo) {
      this.userInfo = userInfo
      const { data: res } = await $http.get('roles')
      if (res.meta.status !== 200) return this.$message.error('获取角色列表失败')
      this.rolesList = res.data
      this.setRoleDialogVisible = true
    },
    //点击按钮分配角色
    async saveRoleInfo() {
      if (!this.selectedRoleId) return this.$message.error('请选择需要分配权限的角色')
      const { data: res } = await $http.put(`users/${this.userInfo.id}/role`, { rid: this.selectedRoleId })
      if (res.meta.status !== 200) return this.$message.error('更新角色失败')
      this.$message.success('更新角色成功')
      this.getUserList()
      this.setRoleDialogVisible = false
    },
    // 监听分配角色对话框的关闭事件
    setRoleDialogClosed() {
      this.selectedRoleId = ''
      this.userInfo = {}
    }
  }
}
</script>

<style lang="less" scoped></style>
